Casio FX-991ES Plus Scientific Calculator
Addition (+)
Subtraction (-)
Multiplication (×)
Division (÷)
Power (^)
Square Root (√)
function calculateCasio() {
const value1 = parseFloat(document.getElementById(‘value1’).value);
const value2 = parseFloat(document.getElementById(‘value2’).value);
const operation = document.getElementById(‘operation’).value;
let result;
if (isNaN(value1) || isNaN(value2)) {
alert(‘Please enter valid numbers for both values.’);
return;
}
switch (operation) {
case ‘add’:
result = value1 + value2;
break;
case ‘subtract’:
result = value1 – value2;
break;
case ‘multiply’:
result = value1 * value2;
break;
case ‘divide’:
if (value2 === 0) {
alert(‘Cannot divide by zero.’);
return;
}
result = value1 / value2;
break;
case ‘power’:
result = Math.pow(value1, value2);
break;
case ‘sqrt’:
if (value1 < 0) {
alert('Cannot calculate the square root of a negative number.');
return;
}
result = Math.sqrt(value1);
break;
default:
result = 'Invalid operation';
}
document.getElementById('result').innerText = 'Result: ' + result;
}
Result: